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Deciphering the Effect of a Cu(II)-hydrazone Complex on Intracellular Cell Signalling Pathways in a Human
Lucía M Balsa1, Lucía Santa Maria de la Parra1, Valeria Ferretti1
1CEQUINOR (UNLP, CCT-CONICET La Plata, asociado a CIC), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Blvd. 120 N° 1465, La Plata, (1900), Argentina.
Chembiochem : a European Journal of Chemical Biology
|August 9, 2024
Summary
Copper compounds show promise as osteosarcoma (OS) treatments, effectively reducing cancer cell viability and proliferation. This study reveals copper-hydrazone
Area of Science:
- Oncology
- Pharmacology
- Biochemistry
Background:
- Osteosarcoma (OS) is a bone cancer predominantly affecting young individuals.
- Copper compounds are emerging as potential anticancer agents, offering an alternative to platinum-based therapies.
- Understanding the molecular mechanisms of novel copper-based drugs is crucial for therapeutic development.
Purpose of the Study:
- To elucidate the molecular targets and cellular pathways of a copper(II)-hydrazone (CuHL) against human osteosarcoma.
- To evaluate the efficacy of CuHL in both 2D and 3D osteosarcoma models.
- To identify key protein expression changes induced by CuHL treatment.
Main Methods:
- Cell viability assays were performed on MG-63 osteosarcoma cells in 2D and 3D cultures.
- Mechanisms of action including DNA interaction, genotoxicity, reactive oxygen species (ROS) generation, and proteasome activity were investigated.
- Proteomic analysis was employed to identify differentially expressed proteins.
Main Results:
- CuHL significantly reduced osteosarcoma cell viability in 2D (IC50: 2.6±0.3 μM) and 3D (IC50: 9.9±1.4 μM) models.
- CuHL inhibited cell proliferation and induced apoptosis.
- Key mechanisms involved DNA interaction, genotoxicity, ROS generation, and proteasome inhibition.
- Proteomic analysis identified 67 differentially expressed proteins, impacting stress response, unfolded protein response, ATP synthesis, DNA replication, and redox homeostasis.
Conclusions:
- The copper(II)-hydrazone (CuHL) exhibits significant antitumor activity against osteosarcoma cells.
- CuHL exerts its effects through multiple pathways including DNA damage, oxidative stress, and proteasome inhibition.
- Proteomic data provides insights into the molecular underpinnings of CuHL's efficacy, highlighting its potential as a novel osteosarcoma therapeutic.
